Slide rail assembly

ABSTRACT

A slide rail assembly includes a first rail, a first connection base, a second rail and a second connection base. The first rail includes two first sidewalls and a first lateral wall connected between the two first sidewalls. A first passage is defined by the two first sidewalls and the first lateral wall along a first direction. The first connection base is movably connected to the first rail and is movable relative to the first rail between a first position and a second position in the first passage, and configured to connect to a first arm of a cable management device. The second rail is capable of moving relative to the first rail along the first direction. The second connection base is connected to the second rail, and configured to connect to a second arm of the cable management device movably connected to the first arm.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a slide rail assembly, and moreparticularly, to a slide rail assembly capable of allowing both ends ofa cable management device to move with a chassis when the chassis isdrawn out.

2. Description of the Prior Art

A slide rail assembly may comprise an outer rail, a middle rail and aninner rail movably connected to each other for being extended orretracted. Both ends of the outer rail can be attached to a rack forsupporting the slide rail assembly. The middle rail is movably connectedbetween the outer rail and the inner rail for supporting the inner railwhen the inner rail is pulled out. The inner rail can carry a device,such as a chassis, such that the slide rail assembly can allow thechassis to be stored in the rack or drawn out from the rack.

Generally, a cable management device is provided on the slide railassembly for securing cables between the rack and the chassis. When thetravel distance of the slide rail assembly is increased, a longer cablemanagement device is required. In order to prevent the cable managementdevice from sagging downward, U.S. Pat. No. 7,746,667 discloses a sliderail assembly comprising a support member for supporting a cablemanagement device. However, the support member may increase complexityof structure of the slide rail assembly, and further increase difficultyfor installing the slide rail assembly.

SUMMARY OF THE INVENTION

The present invention provides a slide rail assembly comprising a firstrail, a first connection base, a second rail and a second connectionbase. The first rail defines a first passage along a first direction.The first connection base is movably connected to the first rail and ismovable relative to the first rail between a first position and a secondposition in the first passage. The second rail is capable of movingrelative to the first rail along the first direction. The secondconnection base is connected to the second rail.

Preferably, the first rail comprises two first sidewalls and a firstlateral wall connected between the two first sidewalls, the firstpassage being defined by the two first sidewalls and the first lateralwall, and the slide rail assembly further comprises a middle railmovably connected to the first rail and movable relative to the firstrail in the first passage, the middle rail comprises two secondsidewalls and a second lateral wall connected between the two secondsidewalls, and a second passage is defined by the two second sidewallsand the second lateral wall along the first direction, wherein thesecond rail is movably connected to the middle rail and movable relativeto the middle rail in the second passage.

Preferably, the first connection base comprises an elastic armconfigured to engage with the middle rail, and a releasing unit isarranged on the first rail for releasing the elastic arm from the middlerail when the first connection base is at the second position.

Preferably, the first connection base further comprises an abuttingportion configured to abut against the middle rail.

Preferably, the first rail further comprises a stopper for stopping thefirst connection base when the first connection base is at the secondposition.

The present invention further provides a slide rail assembly comprisinga first rail, a first connection base, a second rail and a secondconnection base. The first rail comprises two first sidewalls and afirst lateral wall connected between the two first sidewalls. A firstpassage is defined by the two first sidewalls and the first lateral wallalong a first direction. The first connection base is movably connectedto the first rail and is movable relative to the first rail in the firstpassage, the first connection base is configured to connect to a firstarm of a cable management device. The second rail is capable of movingrelative to the first rail along the first direction. The secondconnection base is connected to the second rail, and configured toconnect to a second arm of the cable management device movably connectedto the first arm, wherein when the second rail is moved a predetermineddistance outward along the first direction, the first connection base ispulled by the second rail through the cable management device to movefrom a first position toward a second position in the first passage.

The present invention further provides a slide rail assembly, configuredto install a chassis on a rack, the slide rail assembly comprising afirst rail, a first bracket, a second bracket, a first connection base,a middle rail, a second rail and a second connection base. The firstrail comprises two first sidewalls and a first lateral wall connectedbetween the two first sidewalls. A first passage is defined by the twofirst sidewalls and the first lateral wall along a first direction. Thefirst bracket is connected to a first end of the first rail, andconfigured to attach to a first post of the rack. The second bracket isconnected to a second end of the first rail, and configured to attach toa second post of the rack. The first connection base is movablyconnected to the first rail and is movable relative to the first rail inthe first passage, the first connection base is configured to connect toa first arm of a cable management device. The middle rail is movablyconnected to the first rail and is movable relative to the first rail inthe first passage, and the middle rail comprises two second sidewallsand a second lateral wall connected between the two second sidewalls. Asecond passage is defined by the two second sidewalls and the secondlateral wall along the first direction. The second rail is movablyconnected to the middle rail and is movable relative to the middle railin the second passage, the chassis being mounted on the second rail. Thesecond connection base is connected to the second rail, and configuredto connect to a second arm of the cable management device movablyconnected to the first arm, wherein when the second rail is moved apredetermined distance outward along the first direction, the firstconnection base is pulled by the second rail through the cablemanagement device to move from a first position toward a second positionin the first passage.

These and other objectives of the present invention will no doubt becomeobvious to those of ordinary skill in the art after reading thefollowing detailed description of the preferred embodiment that isillustrated in the various figures and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram showing a slide rail assembly of an embodiment ofthe present invention.

FIG. 2 is an exploded view of the slide rail assembly of an embodimentof the present invention.

FIG. 3 is a diagram showing the slide rail assembly of an embodiment ofthe present invention configured to install a chassis onto a rack.

FIG. 4 is a diagram showing a folded cable management device when thechassis is stored in the rack.

FIG. 5 is a diagram showing an end of the first arm of the cablemanagement device located at a position on the outer rail.

FIG. 6 is a diagram showing the end of the first arm of the cablemanagement device located at another position on the outer rail.

FIG. 7 and FIG. 8 are diagrams showing the first connection basecomprising an elastic arm for engaging with the middle rail.

FIG. 9 is a diagram showing the first connection base engaged with themiddle rail.

FIG. 10 is a diagram showing the first connection base released from themiddle rail.

FIG. 11 is a diagram showing the supporting base located at a positionon the first bracket.

FIG. 12 is a diagram showing the supporting base located at anotherposition on the first bracket.

FIG. 13 is a cross-sectional view of the slide rail assembly along line1-1 of FIG. 1 according to an embodiment of the present invention.

DETAILED DESCRIPTION

FIG. 1 is a diagram showing a slide rail assembly of an embodiment ofthe present invention. FIG. 2 is an exploded view of the slide railassembly of an embodiment of the present invention. The slide railassembly 10 comprises an outer rail 20, a middle rail 30, an inner rail40, a first connection base 82 and a second connection base 84. Theouter rail 20 comprises two first sidewalls 22 and a first lateral wall24 connected between the two first sidewalls 22. A first passage isdefined by the two first sidewalls 22 and the first lateral wall 24along a first direction X (a longitudinal direction of the slide railassembly 10). The middle rail 30 is movably connected to the outer rail20 and is movable relative to the outer rail 20 in the first passage.The middle rail 30 comprises two second sidewalls 32 and a secondlateral wall 34 connected between the two second sidewalls 32. A secondpassage is defined by the two second sidewalls 32 and the second lateralwall 34 along the first direction X. The inner rail 40 is movablyconnected to the middle rail 30 and is movable relative to the middlerail 30 in the second passage. The first connection base 82 is movablyconnected to the outer rail 20 and is movable relative to the outer rail20 between a position C and a position D in the first passage. Thesecond connection base 84 is connected to the inner rail 40.

The slide rail assembly 10 further comprises a first bracket 50 and asecond bracket 60. The first bracket 50 is connected to a first end ofthe outer rail 20. The second bracket 60 is connected to a second end ofthe outer rail 20.

Referring to FIG. 3, FIG. 3 is a diagram showing the slide rail assemblyof an embodiment of the present invention configured to install achassis onto a rack. The first bracket 50 is configured to attach to afirst post 102 of the rack, and the second bracket 60 is configured toattach to a second post 104 of the rack, such that the slide railassembly 10 can be installed on the rack. Moreover, a chassis 90 can bemounted on the inner rail 40, such that the slide rail assembly 10 canallow the chassis 90 to be stored in the rack or drawn out from therack. The chassis 90 comprises a first portion 92 and a second portion94. The first portion 92 is wider than the second portion 94, and a sideof the second portion 94 is mounted on the inner rail 40. In addition,the first connection base 82 is configured to connect to a first arm 112of a cable management device 110, and the second connection base isconfigured to connect to a second arm 114 of the cable management device110 movably connected to the first arm 112. Wherein, the first arm 112and the second arm 114 can be pivotally connected to each other. Thecable management device 110 can support cables connecting to a devicearranged on the chassis 90. Moreover, as shown in FIG. 4, when thechassis 90 is stored in the rack, the cable management device 110 isfolded.

According to the above arrangement, when the inner rail 40 is moved apredetermined distance outward along the first direction X, the firstconnection base 82 can be pulled by the inner rail 40 through the cablemanagement device 110 to move in the first passage. As shown in FIG. 5and FIG. 6, an end of the first arm 112 of the cable management device110 can move on the slide rail assembly 10 when the chassis 90 is drawnout. In other words, both ends of the cable management device 110 canmove with the inner rail 40 when the inner rail 40 is pulled out.Therefore, lengths of the first and second arms 112, 114 of the cablemanagement device 110 can be reduced, such that a support member forsupporting the cable management device 110 is not needed when the traveldistance of the slide rail assembly 10 is increased.

Referring to FIG. 1 again, according to an embodiment of the presentinvention, the outer rail 20 can further comprises a stopper 86 forstopping the first connection base 82 when the first connection base 82arrives at the position D. However, in other embodiment of the presentinvention, the stopper 86 is not necessary.

Referring to FIG. 7 and FIG. 8, FIG. 7 and FIG. 8 are diagrams showingthe first connection base comprising an elastic arm for engaging withthe middle rail. According to an embodiment of the present invention,the first connection base 82 can comprises an elastic arm 83, and a hookportion 85 of the elastic arm 83 can enter an opening 36 of the middlerail 30 for connecting the first connection base 82 and the middle rail30. As shown in FIG. 9, when the first connection base 82 is not locatedat the position D, the elastic arm 83 is pressed to push the hookportion 85 of the elastic arm 83 into the opening 36 of the middle rail30, such that the first connection base 82 is engaged with the middlerail 30 for moving with the middle rail 30. As shown in FIG. 10, whenthe first connection base 82 arrives at the position D, a releasingunit, such as a releasing hole 26 on the outer rail 20 can allow theelastic arm 83 to recover, such that the hook portion 85 of the elasticarm 83 moves out from the opening 36 of the middle rail 30 for releasingthe elastic arm 83 from the middle rail 30, thus the first connectionbase 82 is no longer moved with the middle rail 30. Moreover, theelastic arm 83 can further comprise an abutting portion 87 configured toabut against the middle rail 30. Thus when the middle rail 30 is pushedtoward the position C, the first connection base 82 can be pushed by themiddle rail 30 for moving with the middle rail 30. However, the presentinvention is not limited to the above embodiment, the present inventioncan comprise other kind of structure for allowing the first connectionbase 82 to be connected to and released from the middle rail 30.

On the other hand, as shown in FIG. 1 and FIG. 2, the first bracket 50can comprise two third sidewalls 52 and a third lateral wall 54connected between the two third sidewalls 52. A third passage is definedby the two third sidewalls 52 and the third lateral wall 54 along thefirst direction X. The slide rail assembly 10 can further comprise asupporting base 70. The supporting base 70 comprises a first supportingportion 72 and a second supporting portion 74. The first supportingportion 72 comprises two supporting sidewalls 76 and a supportinglateral wall 78 connected between the two supporting sidewalls 76. Thetwo supporting sidewalls 76 respectively correspond to the two secondsidewalls 32 of the middle rail 30, and the supporting lateral wall 78corresponds to the second lateral wall 34 of the middle rail 30. Asupporting passage is defined by the two supporting sidewalls 76 and thesupporting lateral wall 78 along the first direction X. The supportingpassage corresponds to the first passage, and is configured to allow themiddle rail 30 to move into the supporting passage. The secondsupporting portion 74 is movably connected to the first bracket 50 andis movable relative to the first bracket 50 in the third passage alongthe first direction X.

According to the above arrangement, when the chassis 90 is drawn outfrom the rack, the middle rail 30 moves relative to the outer rail 20 inthe first passage, and a portion of the middle rail 30 moves into thesupporting passage for being supported by the first supporting portion72 of the supporting base 70. As shown in FIG. 11 and FIG. 12, thesupporting base 70 can move between a position A and a position B on thefirst bracket 50, for supporting the middle rail 30 when the middle rail30 is pulled out. Therefore, the middle rail 30 is supported by both theouter rail 20 and the supporting base 70, such that the slide railassembly 10 can carry the chassis 90 more stably when the chassis 90 isdrawn out from the rack.

Referring to FIG. 13, FIG. 13 is a cross-sectional view of the sliderail assembly along line 1-1 of FIG. 1. The supporting base 70 canfurther comprise at least one contact piece 73 arranged on the firstsupporting portion 72. When the portion of the middle rail 30 moves intothe supporting passage, the portion of the middle rail 30 contacts thecontact piece 73 for driving the supporting base 70 to move along thefirst direction X relative to the first bracket 50. Therefore, when thechassis 90 is drawn outward, the supporting base 70 can be driven by themiddle rail 30 to move to an outer position for providing bettersupport. In other embodiment of the present invention, the supportingbase 70 may not comprise the contact piece 73, that is, the supportingbase 70 is not driven by the middle rail 30 to move when the chassis 90is drawn outward. The supporting base 70 can also be moved manually.

In the above embodiment, the outer rail 20 and the first bracket 50 areintegrally formed, and the outer rail 20 and the first bracket 50 arearranged at different planes along a second direction Y, where thesecond direction Y is perpendicular to the first direction X. Accordingto the above arrangement, the outer rail 20 and the first bracket 50 cancorrespond to the shape of the chassis 90. However, the presentinvention is not limited to the above embodiment, the outer rail 20 andthe first bracket 50 can be formed individually.

In addition, the present invention is not limited to the slide railassembly comprising the outer rail, the middle rail and the inner rail.In other embodiment of the present invention, the middle rail can beomitted, and the inner rail can replace the middle rail to be movablyconnected to the outer rail and be movable relative to the outer rail inthe first passage.

In contrast to the prior art, the slide rail assembly of the presentinvention comprises the first connection base movably arranged on theouter rail, for allowing both ends of the cable management device tomove with the chassis when the chassis is drawn out from the rack.Therefore, lengths of the arms of the cable management device can bereduced, and the slide rail assembly of the present invention does notneed a support member for supporting the cable management device whenthe travel distance of the slide rail assembly is increased.

Those skilled in the art will readily observe that numerousmodifications and alterations of the device and method may be made whileretaining the teachings of the invention. Accordingly, the abovedisclosure should be construed as limited only by the metes and boundsof the appended claims.

What is claimed is:
 1. A slide rail assembly, comprising: a first raildefining a first passage along a first direction; a first connectionbase movably connected to the first rail and movable relative to thefirst rail between a first position and a second position in the firstpassage; a second rail capable of moving relative to the first railalong the first direction; and a second connection base connected to thesecond rail; wherein the first rail comprises two first sidewalls and afirst lateral wall connected between the two first sidewalls, the firstpassage is defined by the two first sidewalls and the first lateralwall, the slide rail assembly further comprises a middle rail movablyconnected to the first rail and movable relative to the first rail inthe first passage, the middle rail comprises two second sidewalls and asecond lateral wall connected between the two second sidewalls, a secondpassage is defined by the two second sidewalls and the second lateralwall along the first direction, the second rail is movably connected tothe middle rail and movable relative to the middle rail in the secondpassage.
 2. The slide rail assembly of claim 1, wherein the firstconnection base comprises an elastic arm configured to engage with themiddle rail, and a releasing unit is arranged on the first rail forreleasing the elastic arm from the middle rail when the first connectionbase is at the second position.
 3. The slide rail assembly of claim 2,wherein the elastic arm further comprises an abutting portion configuredto abut against the middle rail.
 4. The slide rail assembly of claim 1,wherein the first rail further comprises a stopper for stopping thefirst connection base when the first connection base is at the secondposition.
 5. A slide rail assembly, comprising: a first rail comprisingtwo first sidewalls and a first lateral wall connected between the twofirst sidewalls, a first passage being defined by the two firstsidewalls and the first lateral wall along a first direction; a firstconnection base movably connected to the first rail and movable relativeto the first rail in the first passage, the first connection baseconfigured to connect to a first arm of a cable management device; asecond rail capable of moving relative to the first rail along the firstdirection; and a second connection base connected to the second rail,and configured to connect to a second arm of the cable management devicemovably connected to the first arm; wherein when the second rail ismoved a predetermined distance outward along the first direction, thefirst connection base is pulled by the second rail through the cablemanagement device to move from a first position toward a second positionin the first passage.
 6. The slide rail assembly of claim 5 furthercomprising a middle rail movably connected to the first rail and movablerelative to the first rail in the first passage, the middle railcomprising two second sidewalls and a second lateral wall connectedbetween the two second sidewalls, a second passage being defined by thetwo second sidewalls and the second lateral wall along the firstdirection, wherein the second rail is movably connected to the middlerail and movable relative to the middle rail in the second passage. 7.The slide rail assembly of claim 6, wherein the first connection basecomprises an elastic arm configured to engage with the middle rail, anda releasing unit is arranged on the first rail for releasing the elasticarm from the middle rail when the first connection base is moved to thesecond position.
 8. The slide rail assembly of claim 7, wherein theelastic arm further comprises an abutting portion configured to abutagainst the middle rail when the middle rail pushes the first connectionbase to move toward the first position.
 9. The slide rail assembly ofclaim 5, wherein the first rail further comprises a stopper for stoppingthe first connection base when the first connection base is moved to thesecond position.
 10. A slide rail assembly, configured to install achassis on a rack, the slide rail assembly comprising: a first railcomprising two first sidewalls and a first lateral wall connectedbetween the two first sidewalls, a first passage being defined by thetwo first sidewalls and the first lateral wall along a first direction;a first bracket connected to a first end of the first rail, andconfigured to attach to a first post of the rack; a second bracketconnected to a second end of the first rail, and configured to attach toa second post of the rack; a first connection base movably connected tothe first rail and movable relative to the first rail in the firstpassage, the first connection base configured to connect to a first armof a cable management device; a middle rail movably connected to thefirst rail and movable relative to the first rail in the first passage,the middle rail comprising two second sidewalls and a second lateralwall connected between the two second sidewalls, a second passage beingdefined by the two second sidewalls and the second lateral wall alongthe first direction; a second rail movably connected to the middle railand movable relative to the middle rail in the second passage, thechassis being mounted on the second rail; and a second connection baseconnected to the second rail, and configured to connect to a second armof the cable management device movably connected to the first arm;wherein when the second rail is moved a predetermined distance outwardalong the first direction, the first connection base is pulled by thesecond rail through the cable management device to move from a firstposition toward a second position in the first passage.
 11. The sliderail assembly of claim 10, wherein the first connection base comprisesan elastic arm configured to engage with the middle rail, and areleasing unit is arranged on the first rail for releasing the elasticarm from the middle rail when the first connection base is moved to thesecond position.
 12. The slide rail assembly of claim 10, wherein thefirst connection base further comprises an abutting portion configuredto abut against the middle rail when the middle rail pushes the firstconnection base to move toward the first position.
 13. The slide railassembly of claim 10, wherein the first rail further comprises a stopperfor stopping the first connection base when the first connection base ismoved to the second position.
 14. The slide rail assembly of claim 10,wherein the chassis comprises a first portion and a second portion, thefirst portion is wider than the second portion, and a side of the secondportion is mounted on the second rail.